Problem adding I2S to nRF connect SDK - DTS

RE: Problem adding I2S to nRF connect SDK - DTS

Håkon Alseth — Thu, 17 Jun 2021 08:31:00 GMT

Hi,

[quote user="HyperS"]<EDIT 17-06-2021> m_blocks_transferred is never increased. I added an increase but I'm not sure if it was placed in the right place. I added: m_blocks_transferred++; after: prepare_tx_data(mp_block_to_fill);.[/quote]

Ooops! I cut away a bit too much when I ported the project, my apologies!

Your proposed fix is good.

Kind regards,

Håkon

RE: Problem adding I2S to nRF connect SDK - DTS

HyperS — Wed, 16 Jun 2021 14:47:24 GMT

Hello,

Thanks for your answer!
It seems that I finally got your port to work, I will check with a Logic Analyzer tomorrow.

However, it seems to hang on:

 do {
			k_cpu_idle();

            if (mp_block_to_fill)
            { 
                printk("1\n");
                prepare_tx_data(mp_block_to_fill);
                mp_block_to_fill = NULL;
            }
            printk("2\n");
        } while (m_blocks_transferred < BLOCKS_TO_TRANSFER);

The debugger prints 1,2,1,2 forever it seems.

Does it need a slave just as I2C to function?

Thanks,

Sander

<EDIT 17-06-2021> m_blocks_transferred is never increased. I added an increase but I'm not sure if it was placed in the right place. I added: m_blocks_transferred++; after: prepare_tx_data(mp_block_to_fill);.

RE: Problem adding I2S to nRF connect SDK - DTS

Håkon Alseth — Thu, 10 Jun 2021 13:30:52 GMT

Hi,

Unfortunately, the i2s isn't ported to zephyr yet (no "nrf" port here: https://github.com/zephyrproject-rtos/zephyr/tree/main/drivers/i2s), so you have to use the nrfx driver directly.

There's a sample available here, but this is tailored towards nrf5340:

https://github.com/siguhe/NCS_I2S_nrfx_driver_example

But I have also ported a sample from nRF5 sdk:

devzone.nordicsemi.com/.../ncs_5F00_nrf5_5F00_i2s_5F00_sample.zip

Kind regards,

Håkon

RE: Problem adding I2S to nRF connect SDK - DTS

HyperS — Thu, 10 Jun 2021 09:07:10 GMT

Addition:
Using: SEGGER Embedded Studio - Release 5.34a Build 2021011401.44914
nRF Connect SDK V1.5.1
Example used: ncs\v1.5.1\nrf\samples\bluetooth\peripheral_uart